Results 61 to 70 of about 38,917 (207)

Golden weapons and golden fetters: From the gold standard to the new geopolitics

The Economic History Review, EarlyView.
Abstract This paper explores the historical relationship between monetary regimes, security concerns, and geopolitical tensions, particularly focusing on the role of gold. Throughout history, monetary systems have been deeply intertwined with international state systems and security provisions.
Harold James
wiley   +1 more source

Effect of Vacuum Energy on Evolution of Primordial Black Holes in Einstein Gravity

, 2011
We study the evolution of primordail black holes by considering present universe is no more matter dominated rather vacuum energy dominated. We also consider the accretion of radiation, matter and vacuum energy during respective dominance period. In this
Jamil, Mubasher, Nayak, Bibekananda
core   +1 more source

Spatial clustering of primordial black holes [PDF]

Physical Review D, 2018
The possibility that primordial black holes (PBHs) are the dark matter (or a fraction thereof) has attracted much attention recently. Their spatial clustering is a fundamental property which determines, among others, whether current observational constraints are evaded within a given mass range, whether merging is significant and whether primordial ...
Desjacques, Vincent, Riotto, Antonio
openaire   +2 more sources

Mechanism for the Suppression of Intermediate-Mass Black Holes

, 2010
A model for the formation of supermassive primordial black holes in galactic nuclei with the simultaneous suppression of the formation of intermediate-mass black holes is presented. A bimodal mass function for black holes formed through phase transitions
A. D. Dolgov, A. Dolgov, A. Dolgov, A. King, A. Starobinsky, B. J. McNamara, B. Lanzoni, D. A. Samarchenko, E. Noyola, G. Illingworth, H. Baumgardt, H. Mii, K. Gebhardt, K. J. Mack, L. M. Ozernoy, M. C. Begelman, M. C. Miller, M. G. Haehnelt, M. J. Rees, M. Mapelli, M. Yu. Khlopov, M. Yu. Khlopov, N. Kawakatu, R. R. Islam, R. R. J. Antonucci, S. G. Rubin, S. G. Rubin, S. G. Rubin, S. G. Rubin, S.-J. Rey, T. P. Roberts, V. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, V. I. Dokuchaev, Yu. N. Eroshenko   +39 more
core   +1 more source

Human–Artificial Intelligence Relationships in Lacanian Perspective: Desire, Silence, and the Big Other

International Journal of Applied Psychoanalytic Studies, Volume 23, Issue 2, June 2026.
ABSTRACT This article offers a Lacanian psychoanalytic interpretation of emerging forms of human–artificial intelligence (AI) relationships, particularly emotionally responsive systems such as AI companions and AI girlfriends. It addresses the notion of “AI psychosis,” understood not as a diagnostic category but as a descriptive term for disturbances ...
Tibor A. Brečka
wiley   +1 more source

Quantum formation of primordial black holes [PDF]

General Relativity and Gravitation, 2019
We provide a (simplified) quantum description of primordial black holes at the time of their formation. Specifically, we employ the horizon quantum mechanics to compute the probability of black hole formation starting from a simple quantum mechanical characterization of primordial density fluctuations given by a Planckian spectrum. We then estimate the
Casadio, Roberto, Giugno, Andrea, Giusti, Andrea, Lenzi, Michele   +3 more
openaire   +4 more sources

Moduli constraints on primordial black holes [PDF]

, 2000
The amount of late decaying massive particles (e.g., gravitinos, moduli) produced in the evaporation of primordial black holes (PBHs) of mass $\Mbh\la10^9 $g is calculated.
Barrow, Barrow, Felder, Grishchuk, Martin Lemoine, Weinberg   +5 more
core   +3 more sources

Root and microbial contributions to anoxic microsite formation in the rhizosphere: a microfluidic approach

New Phytologist, Volume 250, Issue 5, Page 3486-3498, June 2026.
Summary Plant root‐associated anoxic microsites may influence the fate of nutrients and contaminants in the rhizosphere, but their dynamics remain relatively unknown. To examine the formation of root‐induced anoxic microsites over space and time, we use microfluidic devices integrated with transparent, planar oxygen sensors in a wheat (Triticum ...
Emily M. Lacroix, Giulia Ceriotti, Daniel Garrido‐Sanz, Sergey M. Borisov, Jasmine S. Berg, Christoph Keel, Pietro de Anna, Marco Keiluweit   +7 more
wiley   +1 more source

Primordial Black Holes and Gravitational Waves in the U(1) B−L extended inert doublet model: a first-order phase transition perspective

Journal of High Energy Physics
We conduct an analysis of a U(1) B−L extended inert doublet model and obtained the parameter space allowing strong first order phase transitions. We show that a large part of the parameter space can cause double first-order phase transitions.
Indra Kumar Banerjee, Ujjal Kumar Dey, Shaaban Khalil   +2 more
doaj   +1 more source

E-models of inflation and primordial black holes

Frontiers in Physics, 2022
We propose and study the new (generalized) E-type α-attractor models of inflation, in order to include formation of primordial black holes (PBHs). The inflaton potential has a near-inflection point where slow-roll conditions are violated, thus leading to
Daniel Frolovsky, Sergei V. Ketov, Sergei V. Ketov, Sergei V. Ketov, Sultan Saburov   +4 more
doaj   +1 more source